BIKOV, A.; NENOV, N. LOWER BOUNDING THE FOLKMAN NUMBERS $F_v(a_1, . . . , a_s;m − 1)$. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 104, p. 39–53, 2017. Disponível em: https://admin.uni-sofia.bg/index.php/fmi/article/view/36. Acesso em: 15 jan. 2025.